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Finding the Fourth Proportional to 128,045.96, 192,045.72 and 34,529.84

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Solution

The fourth proportional to 128,045.96, 192,045.72 and 34,529.84 is: 51,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.96 : 192,045.72 = 34,529.84 : x
  2. Step 2: Convert to fraction form
    128,045.96/192,045.72 = 34,529.84/x
  3. Step 3: Cross multiply
    128,045.96x = 192,045.72 × 34,529.84
  4. Step 4: Simplify right side
    128,045.96x = 6,631,307,984.28
  5. Step 5: Solve for x
    x = 6,631,307,984.28/128,045.96
  6. Step 6: Final answer
    x = 51,788.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.